江汉大学学报(自然科学版)
江漢大學學報(自然科學版)
강한대학학보(자연과학판)
JOURNAL OF JIANGHAN UNIVERSITY(NATURAL SCIENCES)
2014年
3期
9-12
,共4页
胡成龙%陈韶云%刘学清%刘继延
鬍成龍%陳韶雲%劉學清%劉繼延
호성룡%진소운%류학청%류계연
表面增强拉曼散射%药片状%银微纳结构
錶麵增彊拉曼散射%藥片狀%銀微納結構
표면증강랍만산사%약편상%은미납결구
surface-enhanced Raman scattering%medicine flake%silver nanostructure
通过电化学沉积法制备出一种药片状银微纳结构。采用SEM和XRD等技术对所制备的银微纳结构进行了结构表征,并结合其结构特点对药片状银微纳结构的形成机制进行了初步探讨。单分子检测实验可知超低浓度的罗丹明6G(Rhodamine 6G,R6G),即10-10 mol/L都可以检测到光谱信号,表明这种结构的纳米银可以作为良好的表面增强拉曼散射(surface-enhanced Raman scattering,SERS)的基底,其原因在于药片状纳米银具有层级结构,其表观自相似性赋予其良好的SERS活性。
通過電化學沉積法製備齣一種藥片狀銀微納結構。採用SEM和XRD等技術對所製備的銀微納結構進行瞭結構錶徵,併結閤其結構特點對藥片狀銀微納結構的形成機製進行瞭初步探討。單分子檢測實驗可知超低濃度的囉丹明6G(Rhodamine 6G,R6G),即10-10 mol/L都可以檢測到光譜信號,錶明這種結構的納米銀可以作為良好的錶麵增彊拉曼散射(surface-enhanced Raman scattering,SERS)的基底,其原因在于藥片狀納米銀具有層級結構,其錶觀自相似性賦予其良好的SERS活性。
통과전화학침적법제비출일충약편상은미납결구。채용SEM화XRD등기술대소제비적은미납결구진행료결구표정,병결합기결구특점대약편상은미납결구적형성궤제진행료초보탐토。단분자검측실험가지초저농도적라단명6G(Rhodamine 6G,R6G),즉10-10 mol/L도가이검측도광보신호,표명저충결구적납미은가이작위량호적표면증강랍만산사(surface-enhanced Raman scattering,SERS)적기저,기원인재우약편상납미은구유층급결구,기표관자상사성부여기량호적SERS활성。
The facile and efficient synthetic route for medicine flake silver nanostructure via electro?deposit has been reported. The products are characterized by X-ray diffraction(XRD),Scanning electronic microscopy(SEM)to analyse its nanostructure. The mechanism of the formation of the medicine flake silver is discussed preliminarily. The unimolecule detection experiment shows with the ultralow concentration Rhodamine 6G(R6G),namely 10-10 mol/L,it can be detected the spec?tral signal,illustrates that the silver nanostructure can be used as a good substrate for surface-en?hanced Raman Scattering(SERS). The reason is that the medicine flake silver nanostructure has hier?archical structure,and has excellent SERS activity.